Myntra.com — product returned but failed quality check.

Address:

704/C-Wing,3-Samrat,Tilak Nagar, 400089

I had ordered a dress from ginger by lifestyle from myntra (Order no.113047198934687480003). I got the delivery on time, but the dress came with a side zipper wich was already damaged and stuck. Also, the white fabric had tiny dust stains which made it look very old. Hence i opted for a return of the product. I had all the tags intact along with the package. The delivery guy did not inform me about anything but accepted the packet. I got a mail saying that the product had failed the quality check. What is wrong!! The product was already damaged and looked used. What am i supposed to do? When will i get my refund?